CN103155096B - The incandescent lamp for front lamp of vehicle with new filament geometry - Google Patents
The incandescent lamp for front lamp of vehicle with new filament geometry Download PDFInfo
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- CN103155096B CN103155096B CN201180050660.5A CN201180050660A CN103155096B CN 103155096 B CN103155096 B CN 103155096B CN 201180050660 A CN201180050660 A CN 201180050660A CN 103155096 B CN103155096 B CN 103155096B
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- mid portion
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- heater winding
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- 238000004804 winding Methods 0.000 claims abstract description 34
- 230000001186 cumulative Effects 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 230000002860 competitive Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Abstract
A kind of heater winding for electric filament lamp assembly (100) is provided.Heater winding includes helix windings, and it generally along longitudinal axis (102) between the first end (104) and the second end (106) and extends.Heater winding also includes winding, and it has the first pitch ratio h/d at the first end and the second end, and has the second different pitch ratios along the mid portion (108) between the first end and the second end.
Description
Technical field
It relates to electric filament lamp, more specifically, relate to the heater winding structure with different geometries.Heater winding structure finds particularly application in headlight for vehicle or headlight, but it will be appreciated that selected aspect can find application in the related application running into cut-off region increase contrast problem.
Background technology
U.S. Publication No. 2006/0038471 and U.S. Publication No. 7,456,558 disclose a kind of incandescent filament, and it has the different pitch ratio (pitch of the end opposite being positioned at filament
Ratio), in order to increase is in the brightness of the light/dark boundary of dipped beam.Pitch ratio is represented by below equation:
PR = h/d
Wherein: PR=pitch ratio, the diameter of d=filament wire, the distance between h=adjacent windings circle axis；
But, in the end of the incandescent filament near lamp socket, pitch ratio is higher, thus causes less light to road.Other incandescent filament has the external diameter that the minima of the end from filament increases to the maximum of the second filament end continuously, thus causes the compactest headlight for vehicle.
Even if in view of recent progress, the following filament of the sector also continued absence: it is with applicable geometry, to realize high brightness in needing the light/dark borderline region of dipped beam front lamp of vehicle of favorable luminance.
Summary of the invention
In the exemplary embodiment, a kind of heater winding for electric filament lamp assembly includes helix windings, and it generally along longitudinal axis between the first and second ends and extends.Winding has the first pitch ratio at the first end and the second end, and has the second different pitch ratios along the mid portion between the first end and the second end.
In an embodiment of the disclosure, the first pitch is less than the second pitch.
In the another embodiment of the disclosure, coil has essentially identical diameter at the first end and the second end, and has less diameter along mid portion.
A kind of method of heater winding forming electric filament lamp includes: supply helix windings, and it has along longitudinal axis mid portion between the first end and the second end.The method also includes: provide the first pitch ratio at the first end and the second end；And provide the second different pitch ratios at mid portion.
The principal benefits realized by the heater winding of electric filament lamp is the ability increasing front lamp of vehicle high-high brightness around hot spot region.
Another benefit realized by the heater winding of electric filament lamp is the ability increasing front lamp of vehicle high-high brightness by changing filament geometry.
The another benefit realized by the heater winding of electric filament lamp is to sell in automotive aftermarket department to replace the ability of the new competitive product of whole headlamp assemblies with the brightness increased.
By reading and understanding detailed description below, the other feature of the heater winding of electric filament lamp and benefit will become apparent from.
Accompanying drawing explanation
Fig. 1 is the front view of the heater winding according to first embodiment.
Fig. 2 is the front view of the heater winding according to the second embodiment.
Fig. 3 is the side view of automobile halogen incandescent lamp.
Detailed description of the invention
The heater winding of the present invention is by realizing higher brightness in headlight for vehicle or headlight to change the geometry of coil by the way of different with current techniques.In one exemplary embodiment, filament has higher pitch ratio and middle part between the ends in end or zone line has lower pitch ratio, in order to allow the increase of front lamp of vehicle brightness.This is owing to having uniform gap between the adjacent turn of two, middle part.It addition, filament has the pitch or pitch ratio increased continuously on the direction at filament two ends from zone line.
In a further exemplary embodiment, filament has the diameter of increase at two ends and middle part or zone line between the ends has small diameter, in order to increase the high-high brightness of front lamp of vehicle.Therefore, filament preferably has uniform filament diameter in central region, with the diameter increased continuously in filament direction of both ends from central region.In this embodiment, filament pitch ratio can the mode similar with first embodiment change, or filament can have uniform interval between two adjacent complete circles.Especially, embodiment of the disclosure the lamp being applicable to that there is the filament being axially or transversally directed at.
First and second exemplary lamp wire coil 100,200 of the disclosure illustrate the most in fig. 1 and 2.Heater winding 100,200 for example, tungsten filament.Filament wire can have any suitable cross section, but conventional heater winding cross section is generally circular, oval, square or rectangle.
The heater winding 100 of first embodiment (Fig. 1) is included between the first end 104 and the second end 106 and generally along the helix windings that longitudinal axis 102 extends.Helix windings has the first pitch ratio at the first end 104 and the second end 106.The second different pitch ratios is provided along zone line or mid portion 108 between the first end 104 from the second end 106.Use the formula (PR=h/ of pitch ratio given aboved), the first end 104 of exemplary embodiment and the pitch ratio of the second end 106 can be such as 2.2, and generally between 1.8-2.5.The pitch ratio of the mid portion 108 of exemplary embodiment can be such as 1.4, and generally between 1.1-1.7.Certainly, it will be apparent to those skilled in the art that these scopes are brightness that is exemplary and that obtain being better than the increase of existing layout.
First pitch is the per inch number of turn (tpi) more less than the second pitch.For exemplary embodiment, being positioned at the first pitch at the first end 104 and the second end 106 can be at least per inch 45 circle (tpi) and generally less than about per inch 70 circle (tpi), such as, and about per inch 60 circle (tpi).For exemplary embodiment, being positioned at the second pitch at mid portion 108 can be at least per inch 50 circle (tpi) and normally about per inch 100 circle (tpi), such as, and about per inch 70 circle (tpi).Exemplary lamp wire coil 100 at the first end 104 and the second end 106 and has essentially identical diameter along mid portion 108D.The diameter of exemplary embodimentDCan be such as 1.1mm and normally about 1.0-1.3mm, but it will be apparent to those skilled in the art that in the case of without departing from the scope of the present invention and intention, other size can be used.
Figure 2 illustrates the side view of the heater winding 200 of the second exemplary embodiment.Heater winding 200 is to generally along the helix windings that longitudinal axis 202 extends between the first end 204 and the second end 206.Along the mid portion 208 between the first end 204 from the second end 206, the second different pitch ratios is set.First pitch ratio and the second pitch ratio are the most at least caused by the different-diameter relative to mid portion in end.In the illustrated embodiment, advancing in the axial direction towards each heater winding and/or heater winding from mid portion 208, diameter is gradually increased.I.e., in fig. 2, heater winding 200 axially length L2There is substantially invariable diameter D2To limit pitch ratio 200, this pitch ratio 200 is different from the first end and the second end axially range L1、L3Pitch ratio 204,206.First end the 204, second end 206 and mid portion 208 distinguish each restriction exemplary lamp wire coil 200 about 1/3rd L along the total length L of longitudinal axis 2021、L2、L3。
Fig. 3 shows the electric filament lamp of such as auto lamp 300.Auto lamp 300 is halogen incandescent lamp, with the lampshade being fixed on lamp socket 384 or steep outward 382.Lampshade 382 is formed by light transmissive material and usually includes that dark space 386 is to limit the dazzle from head lamp.Filamentray structure 388 closed by lampshade 382, and this filamentray structure 388 can be to combine one of shown filamentray structure 100 or 200 with description of exemplary embodiment.Filamentray structure is mechanically and electrically connected to go between 392,394, such as by being welded on it so that be easy to long-life and the reliable operation of lamp 300.It will be appreciated that such lamp, it is used for example as the halogen incandescent lamp of auto lamp, that be well known to those skilled in the art and be not described any further comprehensively and be fully understood by the disclosure.
Describe the disclosure with reference to preferred embodiment.Obviously, after reading and understanding foregoing detailed description, other people is it is contemplated that revise and change.The disclosure is intended to be interpreted as including all such amendments and change.
Claims (12)
1. for a heater winding for electric filament lamp assembly, including:
Helix windings, it generally along longitudinal axis extension, institute between the first and second ends
State winding and there is at described first end and the second end the first pitch ratio, and along being positioned at described
Mid portion between one end and the second end has the second different pitch ratios；
Described mid portion has different diameters from described first end and the second end；Described centre
Part has substantially invariable diameter；Along with described coil from described mid portion along described vertical
Advancing to axis, the diameter of described first end and the second end is gradually increased.
Heater winding the most according to claim 1, it is characterised in that described coil is in institute
State the first end and the second end has essentially identical diameter.
Heater winding the most according to claim 1, it is characterised in that described first pitch
It is of about per inch 60 circle.
Heater winding the most according to claim 1, it is characterised in that described second pitch
It is of about per inch 100 circle.
Heater winding the most according to claim 1, it is characterised in that described first end and
Second end is the first filament section, and described mid portion is the second filament section, wherein the first He
Second filament section has different diameters.
Heater winding the most according to claim 5, it is characterised in that described first end and
The of second end is greater diameter than the Second bobbin diameter of described mid portion.
Heater winding the most according to claim 1, it is characterised in that described first end,
Second end and mid portion respectively limit the described coil pact along the total length of described longitudinal axis
1/3rd.
8. the method forming the heater winding of electric filament lamp, including:
Supply helix windings, it has along longitudinal axis between the first end and the second end
Mid portion；
The first pitch ratio is provided at described first end and the second end；And
The second different pitch ratios is provided at described mid portion；Described mid portion and described the
One end and the second end have different diameters；Described mid portion has substantially invariable diameter；
Along with described coil advances along described longitudinal axis from described mid portion, described first end and
The diameter of the second end is gradually increased.
Method the most according to claim 8, it is characterised in that described pitch ratio provides step
Suddenly it is included in described first end and the second end and provides the of the diameter being different from described mid portion
One diameter.
Method the most according to claim 9, it is characterised in that described first diameter is big
Second bobbin diameter in described mid portion.
11. methods according to claim 8, it is characterised in that described pitch ratio provides
Step is basic along the length of described coil at described first end and the second end and mid portion
Upper spaced.
12. 1 kinds of electric filament lamp, including:
Outer lampshade；And
Be enclosed in the filament in described outer lampshade, described filament be included in the first end and the second end it
Between generally along longitudinal axis extend helix windings, described winding is at described first end and second
End has the first pitch ratio, and along the mid portion between described first end and the second end
There is the second different pitch ratios；Described mid portion has not with described first end and the second end
Same diameter；Described mid portion has substantially invariable diameter；Along with described helix windings from
Described mid portion advances along described longitudinal axis, the diameter of described first end and the second end by
Cumulative add.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/908403 | 2010-10-20 | ||
| US12/908,403 US8581492B2 (en) | 2010-10-20 | 2010-10-20 | Electric incandescent lamp for vehicle headlights with new filament geometry |
| US12/908,403 | 2010-10-20 | ||
| PCT/US2011/052433 WO2012054164A1 (en) | 2010-10-20 | 2011-09-21 | Electric incandescent lamp for vehicle headlights with new filament geometry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103155096A CN103155096A (en) | 2013-06-12 |
| CN103155096B true CN103155096B (en) | 2016-11-30 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598342A (en) * | 1984-07-09 | 1986-07-01 | Gte Products Corporation | Low wattage double filament tungsten-halogen lamp |
| EP0533478A1 (en) * | 1991-09-18 | 1993-03-24 | General Electric Company | Incandescent lamps having integrally supported filaments |
| WO2001091161A1 (en) * | 2000-05-23 | 2001-11-29 | Illumination Technology, Inc. | Low voltage incandescent lamp with variable pitch filament |
| CN1737989A (en) * | 2004-08-19 | 2006-02-22 | 电灯专利信托有限公司 | Filament lamp used for vehicle anterior lamp |
| DE102006020580A1 (en) * | 2006-05-03 | 2007-11-08 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Halogen bulb with carbide-containing filament |
| US7541726B2 (en) * | 2006-05-17 | 2009-06-02 | Osram Sylvania Inc. | Lamp filament |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4598342A (en) * | 1984-07-09 | 1986-07-01 | Gte Products Corporation | Low wattage double filament tungsten-halogen lamp |
| EP0533478A1 (en) * | 1991-09-18 | 1993-03-24 | General Electric Company | Incandescent lamps having integrally supported filaments |
| WO2001091161A1 (en) * | 2000-05-23 | 2001-11-29 | Illumination Technology, Inc. | Low voltage incandescent lamp with variable pitch filament |
| CN1737989A (en) * | 2004-08-19 | 2006-02-22 | 电灯专利信托有限公司 | Filament lamp used for vehicle anterior lamp |
| DE102006020580A1 (en) * | 2006-05-03 | 2007-11-08 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Halogen bulb with carbide-containing filament |
| US7541726B2 (en) * | 2006-05-17 | 2009-06-02 | Osram Sylvania Inc. | Lamp filament |
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Granted publication date: 20161130 Termination date: 20190921 |